<template>
  <div class="item"></div>
 
</template>

<script>
export default {
    data() {  
    },
    methods:{
    }
}
</script>

<style scoped>
    .item{
          position: fixed;
          left: 30%;
          bottom: 0px;
          width: 100px;
          height: 100px;
          border: 1px solid blue;
          background: red;
      }
</style>